1 files changed, 84 insertions, 0 deletions

diff --git a/src/plugins/xm_extractor.c b/src/plugins/xm_extractor.c
new file mode 100644
index 0000000..d8e0829
--- /dev/null
+++ b/src/plugins/xm_extractor.c
@@ -0,0 +1,84 @@
+/*
+ * This file is part of libextractor.
+ * (C) 2008, 2009 Toni Ruottu
+ *
+ * libextractor is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published
+ * by the Free Software Foundation; either version 2, or (at your
+ * option) any later version.
+ *
+ * libextractor is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with libextractor; see the file COPYING.  If not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ *
+ */
+
+#include "platform.h"
+#include "extractor.h"
+#include "convert.h"
+
+#define HEADER_SIZE  64
+
+struct header
+{
+  char magicid[17];
+  char title[20];
+  char something[1];
+  char tracker[20];
+  char version[2];
+};
+
+#define ADD(s,t) do { if (0 != proc (proc_cls, "xm", t, EXTRACTOR_METAFORMAT_UTF8, "text/plain", s, strlen(s)+1)) return 1; } while (0)
+
+
+/* "extract" keyword from an Extended Module
+ *
+ * The XM module format description for XM files
+ * version $0104 that was written by Mr.H of Triton
+ * in 1994 was used, while this piece of software
+ * was originally written.
+ *
+ */
+int 
+EXTRACTOR_xm_extract (const unsigned char *data,
+                      size_t size,
+                      EXTRACTOR_MetaDataProcessor proc,
+                      void *proc_cls,
+                      const char *options)
+{
+  char title[21];
+  char tracker[21];
+  char xmversion[8];
+  const struct header *head;
+
+  /* Check header size */
+  if (size < HEADER_SIZE)
+    return 0;
+  head = (const struct header *) data;
+  /* Check "magic" id bytes */
+  if (memcmp (head->magicid, "Extended Module: ", 17))
+    return 0;
+  ADD("audio/x-xm", EXTRACTOR_METATYPE_MIMETYPE);
+  /* Version of Tracker */
+  snprintf (xmversion, 
+            sizeof(xmversion),
+            "%d.%d", 
+            head->version[1],
+            head->version[0]);
+  ADD (xmversion, EXTRACTOR_METATYPE_FORMAT_VERSION);
+  /* Song title */
+  memcpy (&title, head->title, 20);
+  title[20] = '\0';
+  ADD (title, EXTRACTOR_METATYPE_TITLE);
+  /* software used for creating the data */
+  memcpy (&tracker, head->tracker, 20);
+  tracker[20] = '\0';
+  ADD (tracker, EXTRACTOR_METATYPE_CREATED_BY_SOFTWARE);
+  return 0;
+}